The ground state phase transition in the distorted S = 1 kagomé Heisenberg antiferromagnet (KHAF) is studied by means of the perturbational calculation and numerical exact diagonalization method. For strong √ 3× √ 3 lattice distortion, the hexgonal singlet solid (HSS) ground state of the uniform KHAF is destroyed and a new singlet state, the large HSS (LHSS) state, which is globally different f...

BACKGROUND Toxocariasis is an important disease caused by the larvae of parasitic worms such as Toxocara canis and T. cati. Public parks can be the source of toxocariasis for small children. This survey was conducted to determine the prevalence of Toxocara spp. ova in parks of Mashhad and Khaf northeastern Iran. METHODS In this descriptive cross-sectional study, performed in November 2011 to ...

Covid-19 has a diverse impact on various sectors of human life and causes several phenomena, one which is the phenomenon panic buying. Concern over closure number public facilities resulted in price masks, hand sanitizers, tissues, soap other basic necessities, experiencing scarcity due to excessive demand. That an increase prices items market. Of course, consumer behavior very contrary Islam, ...

Jujube (Ziziphus jujuba Mill.) is an important medicinal plant in Iran. Jujube fruit contains amino acids, polysaccharides and microelements.Ripened jujube fruits were collected at fully mature stage from two research collection of jujube at Khaf and Birjand centers in south Khorasan province, Iran, early in September, 2015.The physicochemical properties and antioxidant capacity were i...

the rodents’ fauna of boundary zones of iran are still poorly known. in this research rodents fauna of khaf township in northeast of iran have been reported mainly based on pellets of birds of prey. alive samples and also rodent’s remains from pellet materials of birds of prey in the present study was collected from 46 localities in khaf, northeast of khorasanrazavi province and different speci...

background: toxocariasis is an important disease caused by the larvae of parasitic worms such as toxocara canis and t. cati . public parks can be the source of toxocariasis for small children. this survey was conducted to de-termine the prevalence of toxocara spp. ova in parks of mashhad and khaf northeastern iran. methods: in this descriptive cross-sectional study, performed in november 2011 t...

The rodents’ fauna of boundary zones of Iran are still poorly known. In this research rodents fauna of Khaf township in northeast of Iran have been reported mainly based on pellets of birds of prey. Alive samples and also rodent’s remains from pellet materials of birds of prey in the present study was collected from 46 localities in Khaf, northeast of KhorasanRazavi province and different speci...

during 2010–2011, a faunistic study of the family syrphidae was carried out in torbat heydarie, roshtkhar and khaf (razavi khorasan province), northeastern iran. among the collected specimens, we found two species, paragus gussakovskii bańkowska and platycheirus immarginatus zetterstedt which are new records for the fauna of iran.